National Heart, Lung, and Blood Institute.
Without rich oxygen blood circulating through the limbs there is very serious damage, swelling and heavy weighted down legs are a sign of deep circulation trouble.
As you understand what is happening in the body you will get a picture of why the illness must be reversed.
The foot and ankle surgeon can then correct the underlying foot deformity to prevent future problems should the circulation become seriously restricted again.
This is a very serious operation that goes deep into the arteries, anytime you enter the arteries there is a risk of heart complications, heart attack is possible during the operation.
Talk to your doctor and take control of your cardiovascular health.